Abstract

Based on the backlight module (BLM) with an integrated micro-optical light guide plate (MOLGP) that we proposed [Opt. Express 21, 20159 (2013)], an optical model that maps the relationship between the distribution of microprisms on the bottom surface of the integrated MOLGP and the luminance of the output light is established by a backpropagation neural network in this paper. Then the optimized distribution of the microprisms for high luminance uniformity of the output light is obtained by a genetic algorithm. Finally, the integrated BLM with the optimized distribution of microprisms on the bottom surface of the integrated MOLGP is set up in optical software, and the simulation results show that the luminance uniformity of the output light in this BLM reaches 93%.

© 2014 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  16. S. Haykin, Neural Networks: a Comprehensive Foundation (China Machine, 2003), pp. 1–3.
  17. F. Shi, X. Wang, L. Yu, and Y. Li, MATLAB Neural Network Analysis of 30 Cases (Beijing University, 2010), p. 17.
  18. J. H. Holland, Adaptation in Natural and Artificial Systems (University of Michigan, 1975).
  19. K. A. De Jong, “An analysis of the behavior of a class of genetic adaptive systems,” Ph.D. thesis (University of Michigan, 1975).
  20. D. E. Goldberg, Genetic Algorithms in Search, Optimization and Machine Learning (Addison-Wesley Longman, 1989).

2013

2010

2009

2008

C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of light guide plate with microstructures for extra light modern backlight module,” Jpn. J. Appl. Phys. 47, 6683–6687 (2008).
[CrossRef]

2007

2006

C. H. Chien and Z. P. Chen, “Fabrication of integrated light guiding plate for backlight system,” Proc. SPIE 6109, 610909 (2006).
[CrossRef]

2005

P. Xu, Z. Yan, L. Wan, and H. Huang, “Designing new integrated LGP of backlight system using binary optical technique,” Proc. SPIE 5636, 66–72 (2005).
[CrossRef]

2004

D. Feng, G. Jin, Y. Yan, and S. Fan, “High quality light guide plates that can control the illumination angle based on microprism structures,” Appl. Phys. Lett. 85, 6016–6018 (2004).
[CrossRef]

1985

J. L. McClelland and D. E. Rumelhart, “Distributed memory and the representation of general and specific information,” J. Exp. Psychol. 114, 159–188 (1985).
[CrossRef]

Chen, B.

Chen, X.

X. Chen, P. Xu, L. Wan, and J. Huang, “Novel technologies of light guide plate in backlight system,” Chin. J. Liq. Cryst. Displays 22, 576–582 (2007).

P. Xu and X. Chen, “Integrated microstructure backlight system,” Chinese patentZL200710075263.9 (22December2010).

Chen, Z. P.

C. H. Chien and Z. P. Chen, “Fabrication of integrated light guiding plate for backlight system,” Proc. SPIE 6109, 610909 (2006).
[CrossRef]

Cheng, M.

Cheng, M.-C.

C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of light guide plate with microstructures for extra light modern backlight module,” Jpn. J. Appl. Phys. 47, 6683–6687 (2008).
[CrossRef]

Chien, C. H.

C. H. Chien and Z. P. Chen, “Fabrication of integrated light guiding plate for backlight system,” Proc. SPIE 6109, 610909 (2006).
[CrossRef]

Choi, H.-Y.

Choi, W.-S.

Chu, W.-T.

C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of light guide plate with microstructures for extra light modern backlight module,” Jpn. J. Appl. Phys. 47, 6683–6687 (2008).
[CrossRef]

De Jong, K. A.

K. A. De Jong, “An analysis of the behavior of a class of genetic adaptive systems,” Ph.D. thesis (University of Michigan, 1975).

Duan, S.

P. Xu, Y. Huang, X. Zhang, J. Huang, B. Li, E. Ye, S. Duan, and Z. Su, “Integrated micro-optical light guide plate,” Opt. Express 21, 20159–20170 (2013).
[CrossRef]

P. Xu, X. Zhang, S. Duan, E. Ye, and Y. Huang, “Integrated micro-optical backlight module,” Chinese patent201010601658.x (4July2012).

Fan, S.

D. Feng, G. Jin, Y. Yan, and S. Fan, “High quality light guide plates that can control the illumination angle based on microprism structures,” Appl. Phys. Lett. 85, 6016–6018 (2004).
[CrossRef]

Fang, Y.

Fang, Y.-C.

C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of light guide plate with microstructures for extra light modern backlight module,” Jpn. J. Appl. Phys. 47, 6683–6687 (2008).
[CrossRef]

Feng, D.

D. Feng, G. Jin, Y. Yan, and S. Fan, “High quality light guide plates that can control the illumination angle based on microprism structures,” Appl. Phys. Lett. 85, 6016–6018 (2004).
[CrossRef]

Goldberg, D. E.

D. E. Goldberg, Genetic Algorithms in Search, Optimization and Machine Learning (Addison-Wesley Longman, 1989).

Guo, K.

Ha, K. S.

K. S. Ha, “Backlight of a liquid crystal display device,” U.S. patent6,443,583 (3 September2002).

Haykin, S.

S. Haykin, Neural Networks: a Comprehensive Foundation (China Machine, 2003), pp. 1–3.

Holland, J. H.

J. H. Holland, Adaptation in Natural and Artificial Systems (University of Michigan, 1975).

Huang, H.

P. Xu, Z. Yan, L. Wan, and H. Huang, “Designing new integrated LGP of backlight system using binary optical technique,” Proc. SPIE 5636, 66–72 (2005).
[CrossRef]

Huang, J.

P. Xu, Y. Huang, X. Zhang, J. Huang, B. Li, E. Ye, S. Duan, and Z. Su, “Integrated micro-optical light guide plate,” Opt. Express 21, 20159–20170 (2013).
[CrossRef]

X. Chen, P. Xu, L. Wan, and J. Huang, “Novel technologies of light guide plate in backlight system,” Chin. J. Liq. Cryst. Displays 22, 576–582 (2007).

Huang, Y.

P. Xu, Y. Huang, X. Zhang, J. Huang, B. Li, E. Ye, S. Duan, and Z. Su, “Integrated micro-optical light guide plate,” Opt. Express 21, 20159–20170 (2013).
[CrossRef]

P. Xu, X. Zhang, S. Duan, E. Ye, and Y. Huang, “Integrated micro-optical backlight module,” Chinese patent201010601658.x (4July2012).

Jin, G.

D. Feng, G. Jin, Y. Yan, and S. Fan, “High quality light guide plates that can control the illumination angle based on microprism structures,” Appl. Phys. Lett. 85, 6016–6018 (2004).
[CrossRef]

Kang, M.

Lee, B.-K.

Lee, H.-S.

Lee, J.-H.

Li, B.

Li, C.

Li, C.-J.

C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of light guide plate with microstructures for extra light modern backlight module,” Jpn. J. Appl. Phys. 47, 6683–6687 (2008).
[CrossRef]

Li, Y.

F. Shi, X. Wang, L. Yu, and Y. Li, MATLAB Neural Network Analysis of 30 Cases (Beijing University, 2010), p. 17.

Liu, Z.

McClelland, J. L.

J. L. McClelland and D. E. Rumelhart, “Distributed memory and the representation of general and specific information,” J. Exp. Psychol. 114, 159–188 (1985).
[CrossRef]

Rumelhart, D. E.

J. L. McClelland and D. E. Rumelhart, “Distributed memory and the representation of general and specific information,” J. Exp. Psychol. 114, 159–188 (1985).
[CrossRef]

Shi, F.

F. Shi, X. Wang, L. Yu, and Y. Li, MATLAB Neural Network Analysis of 30 Cases (Beijing University, 2010), p. 17.

Su, Z.

Wan, L.

X. Chen, P. Xu, L. Wan, and J. Huang, “Novel technologies of light guide plate in backlight system,” Chin. J. Liq. Cryst. Displays 22, 576–582 (2007).

P. Xu, Z. Yan, L. Wan, and H. Huang, “Designing new integrated LGP of backlight system using binary optical technique,” Proc. SPIE 5636, 66–72 (2005).
[CrossRef]

Wang, R.

Wang, X.

F. Shi, X. Wang, L. Yu, and Y. Li, MATLAB Neural Network Analysis of 30 Cases (Beijing University, 2010), p. 17.

Xu, P.

P. Xu, Y. Huang, X. Zhang, J. Huang, B. Li, E. Ye, S. Duan, and Z. Su, “Integrated micro-optical light guide plate,” Opt. Express 21, 20159–20170 (2013).
[CrossRef]

X. Chen, P. Xu, L. Wan, and J. Huang, “Novel technologies of light guide plate in backlight system,” Chin. J. Liq. Cryst. Displays 22, 576–582 (2007).

P. Xu, Z. Yan, L. Wan, and H. Huang, “Designing new integrated LGP of backlight system using binary optical technique,” Proc. SPIE 5636, 66–72 (2005).
[CrossRef]

P. Xu and Z. Yan, “The device and fabrication method of integrated micro-optical backlight system,” Chinese patentZL200410052001.7 (22July2009).

P. Xu and X. Chen, “Integrated microstructure backlight system,” Chinese patentZL200710075263.9 (22December2010).

P. Xu, X. Zhang, S. Duan, E. Ye, and Y. Huang, “Integrated micro-optical backlight module,” Chinese patent201010601658.x (4July2012).

Yan, Y.

D. Feng, G. Jin, Y. Yan, and S. Fan, “High quality light guide plates that can control the illumination angle based on microprism structures,” Appl. Phys. Lett. 85, 6016–6018 (2004).
[CrossRef]

Yan, Z.

P. Xu, Z. Yan, L. Wan, and H. Huang, “Designing new integrated LGP of backlight system using binary optical technique,” Proc. SPIE 5636, 66–72 (2005).
[CrossRef]

P. Xu and Z. Yan, “The device and fabrication method of integrated micro-optical backlight system,” Chinese patentZL200410052001.7 (22July2009).

Ye, E.

P. Xu, Y. Huang, X. Zhang, J. Huang, B. Li, E. Ye, S. Duan, and Z. Su, “Integrated micro-optical light guide plate,” Opt. Express 21, 20159–20170 (2013).
[CrossRef]

P. Xu, X. Zhang, S. Duan, E. Ye, and Y. Huang, “Integrated micro-optical backlight module,” Chinese patent201010601658.x (4July2012).

Yoon, J.-B.

Yu, L.

F. Shi, X. Wang, L. Yu, and Y. Li, MATLAB Neural Network Analysis of 30 Cases (Beijing University, 2010), p. 17.

Zhang, X.

P. Xu, Y. Huang, X. Zhang, J. Huang, B. Li, E. Ye, S. Duan, and Z. Su, “Integrated micro-optical light guide plate,” Opt. Express 21, 20159–20170 (2013).
[CrossRef]

P. Xu, X. Zhang, S. Duan, E. Ye, and Y. Huang, “Integrated micro-optical backlight module,” Chinese patent201010601658.x (4July2012).

Zhang, Z.

Appl. Phys. Lett.

D. Feng, G. Jin, Y. Yan, and S. Fan, “High quality light guide plates that can control the illumination angle based on microprism structures,” Appl. Phys. Lett. 85, 6016–6018 (2004).
[CrossRef]

Chin. J. Liq. Cryst. Displays

X. Chen, P. Xu, L. Wan, and J. Huang, “Novel technologies of light guide plate in backlight system,” Chin. J. Liq. Cryst. Displays 22, 576–582 (2007).

J. Display Technol.

J. Exp. Psychol.

J. L. McClelland and D. E. Rumelhart, “Distributed memory and the representation of general and specific information,” J. Exp. Psychol. 114, 159–188 (1985).
[CrossRef]

Jpn. J. Appl. Phys.

C.-J. Li, Y.-C. Fang, W.-T. Chu, and M.-C. Cheng, “Optimization of light guide plate with microstructures for extra light modern backlight module,” Jpn. J. Appl. Phys. 47, 6683–6687 (2008).
[CrossRef]

Opt. Express

Opt. Lett.

Proc. SPIE

C. H. Chien and Z. P. Chen, “Fabrication of integrated light guiding plate for backlight system,” Proc. SPIE 6109, 610909 (2006).
[CrossRef]

P. Xu, Z. Yan, L. Wan, and H. Huang, “Designing new integrated LGP of backlight system using binary optical technique,” Proc. SPIE 5636, 66–72 (2005).
[CrossRef]

Other

P. Xu and Z. Yan, “The device and fabrication method of integrated micro-optical backlight system,” Chinese patentZL200410052001.7 (22July2009).

P. Xu and X. Chen, “Integrated microstructure backlight system,” Chinese patentZL200710075263.9 (22December2010).

P. Xu, X. Zhang, S. Duan, E. Ye, and Y. Huang, “Integrated micro-optical backlight module,” Chinese patent201010601658.x (4July2012).

NPD DisplaySearch, “Small and medium display active matrix OLED penetration to more than double by 2015, according to NPD DisplaySearch,” 17 December 2012, http://www.displaysearch.com/cps/rde/xchg/displaysearch/hs.xsl/news.asp .

K. S. Ha, “Backlight of a liquid crystal display device,” U.S. patent6,443,583 (3 September2002).

S. Haykin, Neural Networks: a Comprehensive Foundation (China Machine, 2003), pp. 1–3.

F. Shi, X. Wang, L. Yu, and Y. Li, MATLAB Neural Network Analysis of 30 Cases (Beijing University, 2010), p. 17.

J. H. Holland, Adaptation in Natural and Artificial Systems (University of Michigan, 1975).

K. A. De Jong, “An analysis of the behavior of a class of genetic adaptive systems,” Ph.D. thesis (University of Michigan, 1975).

D. E. Goldberg, Genetic Algorithms in Search, Optimization and Machine Learning (Addison-Wesley Longman, 1989).

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Figures (9)

Fig. 1.
Fig. 1.

Diagram of the integrated BLM.

Fig. 2.
Fig. 2.

(a) Front view and (b) left view of integrated MOLGP.

Fig. 3.
Fig. 3.

Typical BP neural network optical model.

Fig. 4.
Fig. 4.

Flow chart of BP neural network training fitting.

Fig. 5.
Fig. 5.

Relationship between e¯ and training times in the BP neural network.

Fig. 6.
Fig. 6.

γe of 12 test samples in the BP neural network.

Fig. 7.
Fig. 7.

Flow chart of the GA extremum optimization based on the neural network optical model.

Fig. 8.
Fig. 8.

Relationship between the MSE and the generation number in the GA. The circles show the population MSE and star points show the optimal individual MSE.

Fig. 9.
Fig. 9.

BLM output luminance distribution.

Tables (3)

Tables Icon

Table 1. Structural Parameters of the 2.8 in. Integrated BLM

Tables Icon

Table 2. Values of Training-Sample Number m, Test-Sample Number q, and Region Number n of the MOLGP

Tables Icon

Table 3. Luminance Values Determined by the Nine-Point Measurement Method (unit: nit)

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

e¯=i=1m[j=1n(tijlij)2/n]/m,
γe=(tjlj)/tj×100%(i=1,2,n),
P=[y11y1jy1nyi1yijyinyk1ykjykn].
MSEi=j=1n[lij(j=1nlij)/n]2/n(i=1k),
uni=min(ti)/max(ti),

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